Quick release for wringer-rolls.



S. M. MARSHALL.

QUICK RELEASE FOR WRINGER ROLLS. APPLICATION mm mam. m4.

1,138,770. I Patented May 11,1915.

lill

STEPHEN M. MARSHALL, OF CLINTON, MASSACHUSETTS.

QUICK RELEASE FOR WRINGEB-ROLLS.

Specification of Letters Patent.

Patented May 1 1, 1915.

Application filed August 14, 1914. Serial No. 856,781.

T all who-m itmay concern:

Be it known that I, STERHEN M. MAR- SHALL, a citizen of the UnitedStates, residing at Clinton, in the county of Worcester and State ofMa$achusetts, have invented a new and useful Quick Release for Wringer-Rolls, of which the following is a specification.

This invention relates to a wr' particularly to a device for quicklyreleasing the spring tension from the wringer rolls. The tension uponthe rolls is usually regulated by means of a screw mounted in the upperpart of the frame and adapted to press downwardly upon the yieldingmeans which holds the upper roll down. It is often desirable,particularly in power-operated machines, to be able to release thespring pressure upon the rolls with the least possible delay. v

It is the object of my invention to provide an improved device for thusreleasing the spring pressure upon the rolls, so constructed that therelease of thepressure may be practically instantaneous lVith thisobject in.view, my invention contemplates the provision in a wringer ofa locking lever normally resisting the upward thrust of the regulatingscrew but movable out of normal position to permit the screw and nut tomove freely upwardly.

My invention also contemplates an .arrangement in which the lockinglever will resist the upward pressure upon the regulating screw when thelever is in mid-position only but will release the premure when moved ineither direction therefrom.

Another advantage of my construction resides in the provision of meansfor manually adjusting the spring pressure as desired withoutinterference with the releasing device.

My invention further consists in certain devices, arrangements andcombinations of parts, which will be hereinafter described and moreparticularly pointed out in the appended claims.

The p-referred form of my invention is shown in the drawings in which,

Figure 1 is a front elevation of a wringer having my improved releasingdevice applied-thereto; Fig. 2 is a partial sectional plan view takenalong the. line 22 in Fig.

1, showing the lever in looking position; Fig. 3 is a view similar toFig. 2 but show er and ing thelocking lever in position to release thepressure; Fig. 4 is a. sectional elevation taken along the line 44 inFig. 2; and Fig.

5 is a detail view of one end of the locking lever. v Referring to Fig.1, I have shown my improved releasing device as applied to a wringer ofordinary form having rolls 10 and 11 supported in bearingsl2 and 13, the

bearings 12 being integral with or fixed in the side frames 14 and thebearings 13 being vertically movable therein. A flat spring 15 restsupon the bearings 13 of the upper roll and may be provided with asocket16 posi tioned to receive the end thrust of the regulating screw 17. Thescrew 17 is threaded into a nut 18 which is vertically slidable in theupper portion 19 of the frame of the wringer. The screw 17 is providedwith the usual hand Wheel 20 by which pressure may be manually applied.The nut 18 has an off"- set vertical projection 21 upon one sidethereof, said projection extending a substantial distance above theupper end of the nut. The nut with its projection is slidable in arecess 22,- having a portion 23 corresponding in cross section to theprojection 21.

The frame 19 has an upward extension 24 connected to the body of theframe by the side members 25. The members 25 are separated by a coredrecess within which is positioned the locking lever 26. The lever 26 ispivoted upon the screw 17 and is provided at one end with a handle 27and at its oppo- .90 site end with a lug 28.

When the lever 26 is in mid-position, as shown in Fig. 2, the lug 28overlies the offset projection 21 of the nut 18 and prevents upwardmovement thereof. Any desired tension may then be placed upon the spring15 and thus transmitted to the bearings 13 and the roll 11, the upwardthrust of thespring 15 against the screw 17 being resisted by the lug'28which overlies the off-set projection 21. When the locking lever ismoved in either direction from its mid-position, the

lug 28 will be moved out of alinement with direction. A. recess 29 isformed in the exwill be evident that many changes and modifications canbe made therein by those skilled in the art without departing from thespirit and scope thereof as set forth in the claims. Accordingly I donot wish to be limited to the details herein disclosed, but- What I doclaim is 1. In a wringer, in combination, a frame, a pressure regulatingscrew, a nut fitting said screw an said nut in depressed position, saidmeans being movable in either direction from looking position to releasesaid nut.

2. In a wringer, in combination, a frame, a bearing-tensioning means, ascrew to regulate the'pressure of said means, a nut for said screwvertically slidable but non-rotatable in said frame, said nut having anupward projection, and a locking lever having a portion movable in ahorizontal plane into the path of said projection to hold said nutdepressed against the pressure of said tensioning means.

3. In a wringer, in combination, a frame, a bearing-tensioning means, ascrew to regulate the-pressure of said means, a nut for said screwvertically slidable but non-rotatable in said frame, said nut having anoffset projection, a locking lever having a portion movable into thepath of said projection to hold said nut depressed against the pressure'of said means, said lever engaging said projection when the lever is inmidposition and movable in either direction to clear said projection,and a stop to limit the movement of said lever in each direction.

4. In a wringer, in combination, a frame, a bearing-tensioning means, ascrew to regulate the pressure of said means, a nut for said screwvertically slidable but non-rotatable in said frame, said nut having aprojection, and a locking lever having a lug movable into the path ofsaid projection to hold said nut depressed against the pressure of saidmeans, said lever being pivoted on said screw and partially rotatablethereon.

5. In a wringer, in combination, a frame,

a bearing-tensioning means, a screw to reguvertically slidable but non-,rotatable in said frame, and means to lock late the pressure of saidmeans, a nut for said screw vertically slidable but non-rotatable insaid frame, said nut having a projection, and a locking lever having aportion movable into the path of said projection to hold said nutdepressed against the pressure of said means, said frame having a coredextension cast integrally therewith and said locking means beingpositioned between said frame and its extension and pivotally movableabout said screw.

6. In a wringer, in combination, a frame, a bearing-tensioning means, ascrew to regulate the pressure of said means, a nut for said screwvertically slidable but non-rotatable in said frame, said nut having anolfset projection, and a locking lever having a portion movable into thepath of said projection tohold said nut depressed against the pressureof said means, said frame having an extension supported at either sideon said frame and said locking lever being positioned between said frameand said exten,

sion and pivotally movable about said screw, the movement of said leverin either direction being limited by the supports of said extension.

7. In a wringer, the combination with a frame, a pair of wringer rolls,bearings for said rolls mounted in said frame, and means including aspring and a screw for putting pressure upon said rolls, of a quickrelease device comprising a nut for said screw vertically slidable butnon-rotatable in said frame, and a locking lever movable in a horizontalplane, said lever being effective in mid-position to engage and holdsaid nut in depressed position against the upward pressure of saidspring.

8. In a wringer, the combination with a frame, a pair of wringer rolls,bearings for said rolls mounted in said frame, and means including aspring and a screw for putting pressure upon said rolls, of a quickrelease device comprising a nut for said screw vertically slidable butnon-rotatable in said frame, and a locking lever, said lever beingeffective in mid-position to engage and hold saidnut in depressedposition against the upward pressure of said spring, and said leverbeing movable in either direction from mid-position to release said nut.

In testimony whereof I have hereunto set my hand, in the presence of twosubscribing witnesses.

STEPHEN M. MARSHALL.

Witnesses:

WALTER E. WILsoN,

CLARENCE F. WILSON.

